The Belfort Instrument Company (Belfort) was founded in 1876 in Baltimore, Maryland by Julien Friez.  Belfort forged its leadership role in the development of meteorological instruments through extensive cooperation with the then newly formed U.S. Weather Bureau. Through these efforts, the Belfort Observatory became the first meteorological Observatory and Instrument Laboratory in the United States by 1896.

Over the years, Belfort products have been deployed in mission critical applications in virtually all corners of the globe. During the 1990’s, Belfort began its research efforts around the challenges of automated weather observations. Three new sensors designed and qualified by Belfort for the U.S. National Weather Service's extensive ASOS program (Automated Surface Observing System) have been deployed in over 1200 locations throughout the world and have dramatically improved system efficiency and overall quality and timeliness of routine observations.

Having celebrated its 125th anniversary, Belfort has extended its leadership position beyond its traditional meteorological focus over the last decade into other exciting markets while remaining loyal to its founder’s vision for quality, reliability, product support and value


Meteorological Products

This line offers a broad range of highly reliable meteorological/environmental instruments that accurately measure visibility, wind, precipitation, temperature, humidity, barometric pressure, and ceiling height as well as other standard meteorological parameters. These products serve a worldwide audience in the professional meteorology, aviation, maritime, and highway safety markets

DigiWx™ Digital Weather Systems

DigiWx is Belfort's advanced, patented weather system designed to address the urgent need for delivering real-time, mission critical weather information via wireless transmission. DigiWx™ provides high quality, up-to-the-minute weather conditions to ground personnel and aircraft operators resulting in enhanced aircraft/flight safety and operational performance. The fully automated system includes all the hardware/software needed for a comprehensive data acquisition and distribution solution delivered through PC terminal, telephone, Internet and VHF radio transmissions.

Belfort AWOS AV

This system was originally designed to bring aviation grade weather reporting capabilities to general aviation airports unable to afford the current line of FAA approved AWOS products, with reduced both installation and maintenance costs. The AWOS AV is now manufactured, sold and supported by Optical Scientific Inc. (OSi). For more information, please visit our OSi partner page


ASOS Program

The Automated Surface Observing System is an automated observing system being sponsored by FAA, NWS and the Department of Defense, providing temperature, dew point, wind, altimeter setting, visibility, sky condition, and precipitation observations at hundreds of airports throughout the USA


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Hero Raingauge

Model AEPG II 600/1000 Rain Gauge